French wood burning oven

[Fred]

Yes it's a bit like an AGA/Rayburn, it's white with a door on the left for wood and an oven door on the right and sits in your kitchen with a pipe going up the chimney.

I have heard they are great for heating and using the top, but the oven is difficult to get working. I'm trying to work out exactly how they work and as they are cast iron, would they heat the house better than a wood burner with a glass door.